Vaporizer for explosive-engines.



Pa fented July 1, I902.

J. uzom-z.

VAPORIZEB FOR EXPLOSIVE ENGINES.

A um'ion filed Nov. 2:, 1901.

(No Model.)

Umrno STATES PATENT OFFICE.

JOSEPH LIZOTTE, OF QUINCY, MASSACHUSETTS, ASSIGNOR OF ONE-HALF TO MELLEN N. BRAY, OF BOSTON, MASSACHUSETTS.

VAPORIZER FOR EXPLOSIVE-ENGINESI SPECIFICATION forming part of Letters Patent No. 703,937, dated July 1, 1902. Application filed November 21, 1901. Serial No. 83,089. (No model.)

To all whom it may concern:

Be it known that I, JOSEPH LIZOTTE, of Quincy, in the county of Norfolk and State. of Massachusetts, have invented certain new and useful Improvements in Vaporizers, off which the following is a specification.

The invention relates to vaporizing devices such as are used in connection with gasolene or hydrocarbon engines to effect the mixing I0 of the air and gasolene-vapor introduced into. the cylinder of the engine. Devicesof this character are provided with a mixing chain her into which the air and gosoleneare introduced and from which the intermingled .air and vapor pass into the cylinder on the feed.

ing stroke of the piston. IIeretofore the ink lets for the air and gasolenehave been so ar-j ranged that gasolene was liable to collect in the mixing-chamber after the flowofinten jectiou and to provide a vaporizing device ini which there shall be no danger of gasolene collecting in the mixing-chamber. -This is accomplished by introducing the gasoleue into the air-passage in advance of the air-valve, so that an3 excess of gasolene flowing through the gasolene-inlet after the flow of air and vapor to the cylinder has ceased will not enter the mixing-chamber until the next open- 3 5 ing of the air-valve, when it will be vaporized and mingled with the air before passing to the cylinder.

A further feature of invention consists in arranging the gasolene-valve above the airvalve and providing a spreader, which directs the gasolene into the current of inflowing air, so that it is more efi'ectively vaporized and mingled with the air.

Further features of the invention relate to the arrangement and construction of the parts as will be more particularly set forth in the .claims.

In the accompanying drawing one simple and efficient form of vaporizing device is shown embodying all the features of invention.

In the drawing the figure shows a vertical section of the vaporizing device.

In the view, A indicates the casing which forms the walls of the mixing-chamber B and in which the inlets for the air and gasolene and the outlet for the mingled air and vapor are formed and in which the air and gasolene valves are mounted. The inlet 0 for the air is screw thread-ed for connection with a pipe leading from the usual source of hot-air supply, and the air passage or chamber D com- 4 municates with the mixing-chamber through an air-valve E, located in the top of the mixing chamber.

The valve E is provided with a valve-stem e, which passes down through the mixingchamber and through a plug F,screwed into an opening in the bottom of the casing A. The

valve is held yieldingly to its seat bya coiled 7o spring e, surrounding a bossfon the plug F and having one end engaging the plug and the other engaging the'lower side of the valve.

The inlet G for the gasolene is screwthreaded for connection with a pipe leading from a source of gasolene-supply, and the passage g from the gasolene-inlet communicates with the air passage or chamber D. The supply of gasolene delivered through the passage 9 may be regulated by an adjustable valve H, arranged in said passage and having a head h outside the casing. The passage 9 enters the chamber D directly above the valve E and is normally closed by a gasolene-valve I, which is conical in shape and fits a conical valve-seat at the mouth of the passage 9. The conical surface of the valve is extended to form a spreader J, which directs the gasolene flowing through thepassage g to the outer periphery of the valve E, and conseo quently into the current of air flowing betweenthe valve and'its seat. 7 The valve 1 is provided with a valve-stem i, which extends down through the valvestem e of the air-valve,and the valve is held to its seat by a spring 73', surrounding the valve-stem i and having one end bearing on the bottom of a recess in the valve E and the other end engaging the under side of valve 1.

The valve-stein t is provided with an adjustable shoulder in the form of a nut t screwed onto the end of the valve-stem and arranged a slight distance below the end of the valve-stem e. The nut i may be adjusted to vary the space between the end of valve-stem e, and the nut is held in adjusted position by a lock-nut 7L The spring 6 is stronger than the springvl', so that both valves will be normally held to their seats. With this manner of connecting the valves the valve I will be opened by the valveE after it has partially opened, and the valve I will close tightly in advance of the valve E. The

' relative movement between the valves in mixing-chamber through the outlet K, which and the gasolene flows down over the spreader.

leads from the bottom of the mixing-chamber and is screw-threaded for connection with a pipe leading to the cylinder of the engine.

When the feeding stroke of the piston takes place, the forward movement of the piston causes the valve E to open and the air to flow past the valve into the mixing-chamber, and thence to the engine-cylinder. After the valve E has opened slightly and the flow of air past the valve has begun the valve I is opened .I into the current of in flowing air, with which it is mingled and by which it is carried onward into the mixing-chamber. As the forward movement of the piston ceases the valve E returns to its seat and by this movement first closes the valve I. Any gasolene which is Howing down the spreader J when the valve E closes or which may leak by the valve I before the next opening of the valve E will collect above the valve E. Any such gasolene will flow over the edge of the valve E as soon as this valve is next opened and will mingle with the' air which flows past said valve and be carried to the mixing-chamber. With this arrangement, therefore, there will be no collecting of gasolene in the mixing-chamber to interfere with the properworking of the engine.

The location of the gasolene-valve in the air-passage is advantageous in that the valve is at all-times in contact with the hot air, resulting in a freer flow of the gasolene and a more ready vaporization thereof.

The conical surface below the gasolenevalve not only acts to direct the gasolene into the current of inflowing air, but being subjected to the hot air it presents a heated surface which facilitates the vaporization of the gasolene flowing over it.

What I claim, and desire to secure by Letters Patent, is-

1. In a vaporizing device the combination of a mixing-chamber, an air-chamber, above the mixing-chamber, an air-valve between said chambers provided with a stem extend.- ing outside the mixing-chamber, a gasolenevalve above the air-valve having a stem extending through the stem of the air-valve and provided with a shoulder for determining the movement of the air-valve with relation to the gasolene valve, a spring between the valves, and a spring for holding the air-valve to its seat, substantially as described.

2. In a vaporizing device the combination of a mixing-chamber an air-chamber, an airvalve between said; chambers, a gasolenevalve above said air-valve having a spreadin g-surface extending substantially to the periphery of the air-valve, and connections between said valves whereby the air-valve opens before and closes after said gasolene-valve, substantially as described. I

3. In a vaporizing device the combination of an air-valve having a stem, a gasolene-valve on the opposite side of the air-valve from said stem, a spring tending to separate said valves, anda connection between said valves allowing a limited relative movement between said valves, substantially as described.

4:. In a vaporizing device the combination of a mixing-chamber B, an air-chamber D, an air-valve E between the chambers provided with'a stem e extending outside the chamber B, a gasolene-valve I above valve E having a stem 7 extending through stem 6 and provided with an adjustable shoulder '5 a spring 2" between the valves and a spring 6' for holding valve E to its seat, substantially as described.

5. In a vaporizing device the combination of an air-valve provided with a hollow stem, a gasolene valve having a stem extending through said hollow stem and having a shoulder for engaging the end of said hollow stern, and a spring between said valves, substantially as described.

In testimony whereof I have affixed my signature in presence of two witnesses.

JOSEPH LIZOT'IE.

Witnesses:

VICTOR J. EMERY, IRA L. FISH. 

